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"Watch What Happens Live" beats "Chelsea Lately" in both total viewers and the key demo this week

A little sibling rivalry can be good, no? Below the cross-network battle for late night eyes between ABC's Jimmy Kimmel and NBC's Jay Leno, there's a whole other level of battle.

Andy Cohen serves up the strangest combinations of guests on his boozy late night show, "Watch What Happens Live" on Bravo. Over at NBCUniversal sister network, E!, Chelsea Handler makes fun of her guests – sometimes dating them – and acts as if she couldn't be more over it on "Chelsea Lately."

Who would win in a head to head between the two? TheWrap checked the past week's numbers – total viewers and the advertiser-coveted 18-49 key demo — to find out. You're welcome.

What did we discover? In the past week, blondes may have had more fun, but lushes got more total viewers and more viewers in the key demo. For Monday through Thursday of this week, "WWHL" averaged 379,000 18-49 viewers and 659,000 total viewers. That's 23 percent more than "Chelsea Lately's" 308,000 18-49 viewers and 30 percent more than its 505,000 total viewers, according to Nielsen.

Here's the daily breakdown (averages):

For Monday 4/29/13:"WWHL": 392,000 18-49 and 793,000 total viewers"Chelsea Lately": 315,000 and 513,000 total viewers

For Tuesday 4/30/13:"WWHL": 432,000 18-49 and 693,000 total viewers."Chelsea Lately": 292,000 P18-49 and 512,000 total viewers

For Wednesday 5/01/13:"WWHL": 371,000 18-49 and 615,000 total viewers."Chelsea Lately": 344,000 18-49 and 520,000 total viewers

For Thursday 5/02/13:"WWHL": 321,000 18-49 and 532,000 total viewers."Chelsea Lately": 282,000 18-49 and 474,000 total viewers